Pipe welding TIG 141, MMA 111 in positions PH L045, PH. Welding materials: stainless (CrNi steels) and low carbon steel.

Name of the institution: OÜ A1koolitus (a1koolitus.ee)

Name of the program: Pipe welding TIG 141, MMA 111 in positions PH L045, PH. Welding materials: stainless (CrNi steels) and low carbon steel – 178 ac. h.

The curriculum group and the start of curriculum development: 521 Mechanics and metalworking. The competence of the fourth category of welding standards.

Level of education: Additional education for adults.

Languages of study: Estonian, Russian or English.

Training time: Annual, 23 training days.

Training Registration Information: On-site registration, electronically.

Target group and starting conditions: Adults (from 18 years old) will be admitted to welder training on the basis of an application. All candidates who meet the requirements for admission and pass the test on the spot will also be admitted to enroll in a course.

Division into groups: The grouping of students takes into account the level of knowledge and the spoken language.

Total studying volume (academic lesson/s): 

178 academic hours, of which:

  • 20 ac. h. is a theory
  • 140 ac. h. is a practice,
  • 14 ac. h. is exam preparation – visual inspection
  • 4 ac.h. is a professional counseling, exam preparation.


Methods of teaching: Practical training at an individual welding site consists of performing various tasks of the instructor.

Online lessons: None

Studying goal: At the end of the course the welder must pass a theoretical test and butt-weld 2 pipes in positions PH L045 or PH according to welding processes MMA 111 or TIG 141.


Studying outcomes: 

At the end of the training welder:

  1. Has read the working drawings, work instructions and technological map (WPS).
  2. Can choose work and welding tools correctly.
  3. Can organize a safe working environment (ventilation and earthing).
  4. Can choose correct safety equipment (mask and clothing).
  5. Can prepare and assemble parts and assemblies according to drawings.
  6. Knows how to use welding equipment and technology when welding with a non-fusible tungsten electrode in a shielding gas environment (Argon).
  7. Knows how to use manual welding tools and technology.
  8. Can select welding modes according to the set task.
  9. Can choose welding materials (fusible electrodes, welding rods, tungsten electrodes and shielding gas.)
  10. Can perform visual inspection using weld templates and measuring tools.



Learning content:

1. Workplace organization, selection and preparation of production and auxiliary equipment

1.1 Familiarization with the working drawing, work instructions and technological map (WPS).

1.2 Selecting tools.

1.3 Selection of welding materials.

1.4 Selection and adjustment of welding tools.

1.5 Organizing a safe work environment.

1.6 Selection of personal protective equipment.


2. Preparation and inspection of parts and assemblies

2.1 Preparation and compilation of the detail.

2.2 Assembly and inspection of assemblies for welding.


3. Materials teaching

3.1 Classification and properties of metals.

3.2 Ferrous metals and their alloys: steels, alloy steels, CrNi steels. Features and their use.

3.3 Marking of metals.


4. Performing manual arc welding works and post-processing of details

4.1 Nature and principle of manual arc welding.

4.2 Manual arc welding electrodes. Marking of electrodes according to EN ISO 2560-A.

4.3 Welds, their marking in EN ISO 2553.

4.4 Welding technologies. Welding arc. Arc length. Manual arc welding modes. Selection of modes.

4.5 Welding equipment. Types of welds and different types of electrode movements. Correct electrode angle in different welding processes.

4.6 Melting on rollers on a plane in positions PA, PF, PC, PE.

4.7 Butt seam. Welding in positions PA, PF, PC.

4.8 Corner interface. Welding in positions PB, PF, PD.

4.9 Welding of two pipes as a butt weld in positions PA, PH, PH L045.

4.10 Performing a visual inspection.

4.11 Post-processing of the finished product.

5. Welding with tungsten electrode shielding gas in argon environment (TIG 141)

5.1 Nature of tungsten electrode welding. Important terms and places of use for TIG welding.

5.2 Welding equipment. Burner construction and hose assembly.

5.3 Welding materials. Shielding gases according to EN ISO 14175. Tungsten electrodes according to EN ISO 6848. Welding rods according to EN ISO 636.

5.4 Welding technologies. Welding arc. TIG welding modes and their selection.

5.5 Welding equipment. Right angle of welding torch and additive rod.

Movement of the welding torch and additive rod in the welding bath.

5.6 Welding of stainless steels (CrNi) and protection of weld roots.

5.7 Melting on rollers on a plane in positions PA, PF, PC.

5.8 Welding butt welds in positions PA, PF, PC.

5.9 Welding of corner seams in positions PB, PF, PD.

5.10 Welding butt welds in pipes in position PA (swivel).

5.11 Welding of non-rotating pipes in positions PH 2045 and PH.

Root seam and external seams.


6. Quality control and repair of defects

6.1 Checking the assembly.

6.2 Inspection of welds and repair of defects.

6.3 Carrying out the final inspection.

7. Exam preparation

8. Visual inspection


Description of the learning environment: Both theoretical and practical parts take place at Pae 29, Tallinn. Safety and health requirements are guaranteed in the theory auditorium and workshop. To study the theory, we have 4 classrooms depending on the subject taught, each class can accommodate 30+ people. The theoretical part is issued at home to record knowledge electronically (on memory sticks). We also issue both personal protection and tools for practical training.


List of study materials: DVS study materials. T. Karaganova “Welding ignitable idea” and A. Laansoo “Welding”.


Requirements for completion of studies, including assessment methods and assessment criteria:

Prerequisite for graduation is participation in at least 80% of theory and practice classes. In addition, a theoretical final test must be performed and the part welded in accordance with WPS in accordance with the assessment criteria.


Evaluation method: Two-pipe butt welding with MMA 111 or TIG 141 welding, in positions PH, PHL 045.


Evaluation criteria: At least 60% correct answers to 20 questions. Practical examination for obtaining a welder’s certificate according to EN ISO 9606-1.


Documents to be issued: Welder’s certificate according to EN ISO 9606-1. If all the conditions for obtaining it are met. If the goal was not achieved, but the student attended at least 80% of the lessons, he / she will be issued a certificate of participation in the course.

Summary: The course is intended for metalworkers who are exposed in their daily work and need high-quality and precise welding work. The course is aimed at acquiring professional theoretical and practical knowledge. After completing the course, the student is able to apply the acquired knowledge, namely to weld various materials and details in connection with the performance of their daily tasks using tools and welding equipment. A student who has passed the course and passed the final exam is ready to work or do an internship.


Formation of the final result:


  • Knowledge and use of professional terminology, successful completion of the practical part of the planned study. Performing a theoretical exam test and performing a practical task using welding methods MMA 111 or TIG 141 butt welding of a pipe in positions PH or PH L045.
  • Visual inspection of the workpiece in accordance with WPS.


Requirements for the trainer’s competence: Technical or industrial education, applied education or continuous welding work 10 years. 2 years of experience as an adult educator. 

Theory teacher: Tatiana Karaganova

Practice teacher: Leonid Zhhilyaev


Curriculum approved: 24.04.2020